Check the listing for details. Vintage Soviet lagorithmic ruler 1974 USSR Сalculator Mathematical calculations. Condition: Used. Listed at 18.81 USD. Ruler for calculating numbers and mathematical operations. Date - 1974. Original case.An excellent subject for logical calculations. Very good condition.But there are minor scratches and abrasions.The ruler has a crack along its entire length. The price on the cover is 2 rubles 50 kopecks. That was a lot for those years.The slider can be moved, the central axis can be removed. Excellent Soviet quality. Great item for your collection. I tried my best to convey everything in the photo. I will be very happy to answer all your questions The color in the photo may differ from the actual one depending on your display settings. Shipping times given by Ebay may not be correct and may take a little longer, thanks for your understanding.